1. Chain tracks, also known as tracks, are an important component of excavator walking devices. It is an annular metal structure that surrounds a series of drive wheels, guide wheels, support wheels, and idler wheels. Chain tracks are mainly composed of track plates and chain links. Track plates are usually metal plates with patterns or tooth like structures, while chain links are used to connect various track plates, allowing them to form a continuous circular structure.

2. The supporting role in the excavator is that the chain rail bears the entire weight of the excavator. Excavators themselves have a high quality and also have to withstand various additional forces generated during excavation during the working process. The chain track evenly distributes the weight on the ground through multiple support wheels, preventing the excavator from sinking into soft ground due to excessive local pressure. For example, when working in wetlands or soft soil environments, a wide chain track can reduce the pressure per unit area, allowing excavators to stand and work smoothly. The walking function chain track is a key component for excavators to achieve walking. The driving wheel meshes with the chain rail, and when the driving wheel rotates, it drives the chain rail to move through friction, allowing the excavator to move forward or backward. This walking method enables excavators to have good passability and adapt to various complex terrains, such as muddy ground, sandy land, rugged mountain roads, etc. Compared to wheeled vehicles, chain track excavators are more stable when walking on uneven ground.

During the operation of excavators, such as climbing slopes, dragging heavy objects, etc., the chain rail can provide sufficient traction force. The friction between it and the ground can effectively transmit the power of the engine to the ground, allowing the excavator to complete various complex movements. For example, when excavating hard soil or rock, the chain rail can ensure that the excavator has sufficient strength to stabilize the body and perform excavation operations.

Chain track is the connecting part of the track used in construction machinery such as excavators, usually composed of track shoes, chain links, drive wheels, support wheels, tensioning devices, and other parts. The following is a detailed explanation about the chain track and its role in excavators: 1. The composition of the chain track Track: The part of the chain track that directly contacts the ground, and its material and design directly affect the passability and wear resistance of the excavator. Chain link: a key component that connects the track shoes and requires sufficient strength and flexibility to ensure the smoothness of the chain track during rolling. Drive wheel: responsible for providing forward power for the chain track. Supporting wheel: plays a role in supporting and stabilizing, ensuring the stability of the excavator during operation. Tensioning device: used to maintain moderate tension of the chain rail, preventing it from loosening or falling off during rolling.

2、 The supporting role of chain rails in excavators: As a component of excavator tracks, chain rails can support the weight of excavators and ensure their stability during operation. Transmission function: The chain rail can drive the entire excavator to move on the work site through the driving wheel, achieving the walking function of the excavator. Adapting to complex terrain: The design of the chain track enables it to adapt to various complex terrains, such as muddy, slippery, and uneven ground, ensuring that the excavator can operate normally in various environments. Provide driving force: The driving wheels of the chain track can provide power for the excavator to move forward, enabling it to perform various movements and operations during the operation process. In summary, the chain rail is an important walking component of construction machinery such as excavators, and its quality and performance directly affect the service life and operational efficiency of excavators. Therefore, during the use and maintenance of excavators, special attention should be paid to the maintenance and repair of the chain rails to ensure their normal operation and extend their service life.